vmw_cmdbuf_alloc_space(9)

📦 version 7.3.1, in nixpkgs unstable

💖 vmw_cmdbuf_alloc_space 💖

okay so bestie, welcome to the Kernel API Manual ✨ this one's about vmw_cmdbuf_alloc_space(9) and honestly it's giving "small function, big job" energy 🎀

🌸 NAME 🌸

vmw_cmdbuf_alloc_space — grab some buffer space out of the main pool, that's the whole vibe 💅

✨ SYNOPSIS ✨

int vmw_cmdbuf_alloc_space (struct vmw_cmdbuf_man *man , struct
drm_mm_node *node , size_t size , bool interruptible );

literally just hand it the manager, a node, a size, and a bool and she's off 🫶

🦋 ARGUMENTS 🦋

  • man — the command buffer manager. the main character of this whole situation 👑
  • node — pointer to a pre-allocated range-manager node. yes, you gotta bring your own, no cap 🙈
  • size — how big the allocation is. the actual amount of space you're asking for 💖
  • interruptible — whether to sleep interruptible while waiting for space. like, do you want to be wakeable mid-nap? your call bestie 😴

🌈 DESCRIPTION 🌈

so what does it actually do? this function allocates buffer space from the main pool — iconic behavior, we love to see it ⭐

and if there's, like, no space available ATM? it turns on IRQ handling and sleeps waiting for space to become available 🧚 lowkey a whole vibe, she just waits patiently until the pool frees up 💜

ngl the "turns on IRQ handling and sleeps" part is the spicy bit — that's how she gets woken up when space opens up 🔥

🍓 SEE ALSO 🍓

the whole friend group, fr fr — go read these too:

Kernel file ./drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c:

and that's the page bestie!! 🎀 this lil beauty lives in ./drivers/gpu/drm/vmwgfx and the version vibes are dated October 2026 — go forth and allocate your space, periodt 💅✨🌸

📦 where this page comes from